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Naddika [18.5K]
3 years ago
13

A two-digit number is 3 times the sum of the digits. If the digits are reversed, the new number formed is 9 less than three time

s the original number. What is the two-digit number?
Mathematics
1 answer:
Dima020 [189]3 years ago
5 0

Answer:

27

Step-by-step explanation:

2+7=9.

9x3=27

72+9=81

27x3=81

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A bedroom measures 9 feet long and 11 feet wide. A scale drawing is made using a scale factor of 112.
bazaltina [42]

Given the previous length of the bedroom and the current scale factor, the length of the bedroom in the current scale drawing is 1008ft.

<h3>What is the length of the bedroom in the scale drawing?</h3>

Scale factor is simply a measure for similar figures, who look the same but have different scales or measures.

To get new dimension;

New dimension = scale factor × current dimension

Given that;

  • Current length of the bedroom = 9ft
  • Current width of the bedroom = 11ft
  • Scale factor = 112
  • New length of the bedroom = ?

New dimension = scale factor × current dimension

New length of the bedroom = 112 × 9ft

New length of the bedroom = 1008ft

Therefore, given the previous length of the bedroom and the current scale factor, the length of the bedroom in the current scale drawing is 1008ft.

Learn more about scale factor here: brainly.com/question/22312172

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6 0
2 years ago
Solve the system of linear equations by substitution.<br> 3x + y = -9<br> y=5x+7
11Alexandr11 [23.1K]

Answer:

The solution is x = -2, y = -3

Step-by-step explanation:

Let's start with the equation 3x + y = -9

Substitute the y for 5x+7 seen in the second equation

Now you have 3x + (5x+7) = -9

Lets solve:

Let's add the x's

Now we have 8x + 7 = -9

Substracy seven from each side

Now we have 8x = -16

Now let's divide 8 on each side

Now we have x = -2

Now lets plug in -2 to the second equation

The second equation is y = 5x+7

When we plug in -2 we get y=5(-2)+7

We multiply

We now have y = -10+7

Add

y = -3

The solution is x = -2, y = -3

8 0
3 years ago
HELP LAST ATTEMPT!! marking as brainliest!
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Answer:

B

Step-by-step explanation:

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3 years ago
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Find the greatest common factor (GCF) of 16 and 56.
sertanlavr [38]

Answer:

GCF is 8

16 + 56

= 8(2 + 7)

Step-by-step explanation:

Here, we want to write the greatest common factor of 16 and 56

The greatest common factor is 8

We can use tie rewrite the sum as follows ;

16 + 56 = 8(2 + 7)

7 0
3 years ago
(x/5) + 3 = 9<br> show your work
lisabon 2012 [21]

Answer:

x=30

Step-by-step explanation:

9 - 3 = (x/5)

6 = x/5

(x/5) = 6

x = 5x6

x = 30

Check

(30/5) + 3 = 9

6 + 3 = 9

6 0
3 years ago
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